Escapement for type-writers and recording-machines.



J. RABER. ESOAPEMENT FOR TYPE WRITERS AND RECORDING MACHINES.

APPLICATION FILED PEBJ, 1909.

Patented Oct. 10, 1911.

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JOSEPH RABER, OF POPLAR BLUFF, MISSOURI, A SSIGN'OR T DALTON ADDINGMACHINE COMPANY, OF ST. LOUIS, MISSOURI, A CORPORATION OF MISSOURI. I

ESCAPEMENT son TYPE-WRITERS AND nneonnmo-ivmcnmns.

Specification of Letters Iatent.

To all whom ilt may comm.-

. Be it known that I, J osErH RABER, a citizen of'the United States, residing at Poplar Bluff, Missouri, have invented new and useful Escap'ements for Type-Writers and Recording-Machines, of which the following is a" specification.

This invention relates to escapements for typewriting and other recording machines.

wherein a latera step by step movement is imparted the paper carriage during the operation of the machine.

In a companion application filed on even date herewith, Serial No. i75,403 I have described a mechanism embodying two escapement pawls which are operable across the In this ap-- operation of the. pawls and other supports since they are mounted and operated substantially the same as set forth in the said application above referred to.

y The subject matter of" this invention includes an adjustable stop or abutment whereby the operation of the escapement pawls across the escapement wheel is controlled.

' This invention includes, also certain improvements in'the arrangement of the escapement shaft and the rocker supporting the escapement pawls. y

In the accompanying drawings'Figure 1 is an end elevation of the escapement mechanism embodying my present invention. Fig.

2 is aside elevation thereof, partially in I section, illustrating the arrangement of the escapement shaft.

view of the adjustable stop and rocker.

As-in the. companion application referred to, the support or'han r 1 is arranged for adjustment to the mac 'ine in suitable position and is provided at its upper extr mity with Bearings 2' adapted'to receiye the es- "8; bearings H1 this ineapemene shaft stance comprlse annular flanges, 4 within which are therings- 5 having, at

their inner'fends' the inclinedshoulders 6 Iconstitutin the walls, of race ways for the balls of whlch the bearings are formed. as

I f. adapted for engagement with the rack onthepaper' carriage in the psualmanner hub 8 rigid with said pinion 1s provlded' one end inf the shaft 3 a pin-ion- 7- is attached with a beveled end as shown at9, the-smaller Fig. 3 is a perspectiveportion of the hub extending into the ring 5 and together w'ithsaid ring holding the balls 10 in position therein, said balls con- Patented Oct. 10, 1911. Application filed February 1, 190a Serial naavaaoz.

s'tituting the only support for this end of .the shaft. At the opposite end of the shaft 3 the housing; 11 and the escapement wheel 12 are-arranged-in the same manner as descrlbed in my companion application. A collar 13 on the shaft 3 holds the esc'apement wheel 12 'and is provided witha beveled end extending into the ring 5 andforming, in connection with said ring 5, a race-way for the balls 14 constituting the bearing for this end ofthe shaft 3. The rocker 15, the'stationary pawl 16 and the pivoted pawl v17 are arranged substantially the same as described in my companion application. In the present instance the rocker 15 has ball bearings 18 holding them upon their supports 19. membered, -is mounted on a pivot'pin 16 and is movable on said pivot pin from one side to the other side ofthe pivoted pawl 17 as required for regular or speed escapement,

and is held in its different adjustments by locking pin 16" mounted in av hole in the rocker and actuated againstthe pawl 16 by a leaf spring 16,-said pin constituting means The pawl 16, it will be re for holding the pawl in its different adjustments. c

To. the lower arm of the hanger or support 1 a curved stop member 20 is pivoted and is provided with'two arms extending toward the rocker 15, said rocker being pro-i vided with a lower arm 21 for contact with the lower arm of the stop member. Abutment pads 22 are attached to the rocker for contact with the arms of the stop member when the rocker is operated. A spring 23 connects the upper arm of the stop member 20 to the rocker'15, thereby holding said parts in the position shownin F 1g. 2. A

screw 24 operates through an extension 25' on the stop member 20, and is provided on its inner end with a flanged member 26 which rests in a notch in a projection 27 on the hanger '1.- By adjustment of the screw the stopmember'20 may be moved to any desired position ,as required for operation In Fig. 2 wherein the movable pawl 17 A is shown in engagement with the escapement j #of'the pawls'in speed or regular escapement.

ment with said escapement wheel.

the pawl 16 is moved the pawl 17, occupying with respect to said pawl 17 the position shown by dotted lines in Fig. 2. The in this manner, the screw 24 is operated to move the stop member 20 to the position indicated by dotted lines, which operation swings the rocker 15 to position to hold. the movable pawl 17 out ofengagement with the escapement wheel and the stationary pawl 16 in its new adjustment in engage- ()scillation of the rocker 15 is efiected by suitable connections leading to the operating mechanism.

I am aware that there may be modifications and alterations in the construction and arrangement of the invention without departure from the spirit and scope of the invention, and I do not restrict myself to identical features of construction or arrangement, but

What I'claim and .ters Patent, is I 1. In an escapement mechanism, the combination with the escapement wheel, pawls movable across said wheel, and means for holding said pawls in different positions with respect to each other, of a single stop member limiting movement of the pawls, and an element adjustable to hold said'stop member in different positions corresponding to the position in which the pawls are addesire to secure by Letjusted with respect to each other, substan tially as specified.

2.- in an escapement mechanism the combination with an escapement shaft and ball arranged responding-to the adjustment of the pawls bearings supporting the same, an escapement wheel mounted on said shaft, a rocker, and pawls mounted in said rocker and arranged to engage with escapement wheel, of

-me'ans for holding said pawls in difi'erent adjustments withrespect to each other as required to effect speed and regular escapement of a stop member, and an adjustable device for holding said stop member in different adjustments corresponding to the different adjustments of the pawls with re spect to each other, substantially as specified. I

3. In an escapement mechanism, the combination with an 'escapement wheel, a rocker, pawls carried by said 'rocker arranged to engage with said escapement wheel and adjustable with respect to each other for speed and regular'esca'pement, of a stop member to stop movement of said pawls in both directions during their operation, and'a device operable to adjust and hold said stop member in difierent-positions ctr:

parts embodying this ranged signature to witnesses.

specified.

4. In an escapement mechanism, the compawls having been adjusted I bination with an escapement wheel, a rocker,

two pawls carried by said rocker and arto engage alternately with said escapement wheel during operation, and means for locking one of said pawls in differentpositions as required for speed and regular escapement, of a stop for limiting movement of said pawls during their operation, and a device for adjusting said stop to correspond with the adjustment of said pawls, substantially as specified.

In an escapement mechanism, the combination with the pawl rocker, of a stop member for said pawl rocker, a spring con necting said stop member with said rocker, and a device for holding said stop member in different adjustments.

6. In an escapement mechanism, the combination with a support, and a pawl rocker in said support, of a stop member limiting movement of said rocker in both directions, a spring connecting said rocker with said stop member, and means acting against said support eifectively to hold said stop member in any desired adjustment, substantially as specified. I

7. In an escapement mechanism, the combination with an escapement wheel, arocker, two pawls carried by said rocker and arranged to engage alternately with said wheel during operation, of a stop limiting movement of said pawls during their operation, means for adjusting and holding said stop in difi'erent adjustments effectively to permit operation of said pawls in speed or regular escapement as desired, and a 100 bination with a support, a rocker-extending above and below said support, pawls carried 105 by said rocker, a stop member extending above and below said support and being effective to limit movement of said rocker in both directions, a device for adjusting and holding said stop member in difierent ad- 110 a spring Y connecting said justments, and

stop member, substantially rocker with said as specified.

In testimony whereof, I hereunto aflix my of January, 1909, in the presence of two JOSEPH RABER.

Witnesses:

CHARLES PIo'KLEs, JOIINE. Gnnva.

Copies otthispatent maybeottained for five cents each, by addressing the f Commissioner of Patents,

. i i Washington, D. C.

this specification this 16th day 

